Product details

Applications Encoders/event counters, Inductive touch buttons, Metal proximity detection Number of input channels 4 Rating Automotive Vs (max) (V) 3.6 Vs (min) (V) 2.7 Operating temperature range (°C) -40 to 125
Applications Encoders/event counters, Inductive touch buttons, Metal proximity detection Number of input channels 4 Rating Automotive Vs (max) (V) 3.6 Vs (min) (V) 2.7 Operating temperature range (°C) -40 to 125
WQFN (RGH) 16 16 mm² (4 mm × 4 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1:–40°C to +125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Easy-to-use – Minimal Configuration Required
  • Measure up to 4 Sensors with One IC
  • Multiple Channels Support Environmental and
    Aging Compensation
  • Multi-Channel Remote Sensing Provides Lowest
    System Cost
  • Pin-Compatible Medium and High-resolution Options
    • LDC1312-Q1/LDC1314-Q1: 2/4-ch 12-bit LDC
    • LDC1612-Q1/LDC1614-Q1: 2/4-ch 28-bit LDC
  • Supports Wide Sensor Frequency Range of 1kHz
    to 10MHz
  • Power Consumption:
    • 35 µA Low Power Sleep Mode
    • 200 nA Shutdown Mode
  • 3.3V Operation
  • Support Internal or External Reference Clock
  • Immune to DC Magnetic Fields and Magnets
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1:–40°C to +125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Easy-to-use – Minimal Configuration Required
  • Measure up to 4 Sensors with One IC
  • Multiple Channels Support Environmental and
    Aging Compensation
  • Multi-Channel Remote Sensing Provides Lowest
    System Cost
  • Pin-Compatible Medium and High-resolution Options
    • LDC1312-Q1/LDC1314-Q1: 2/4-ch 12-bit LDC
    • LDC1612-Q1/LDC1614-Q1: 2/4-ch 28-bit LDC
  • Supports Wide Sensor Frequency Range of 1kHz
    to 10MHz
  • Power Consumption:
    • 35 µA Low Power Sleep Mode
    • 200 nA Shutdown Mode
  • 3.3V Operation
  • Support Internal or External Reference Clock
  • Immune to DC Magnetic Fields and Magnets

The LDC1312-Q1 and LDC1314-Q1 are 2- and 4-channel, 12-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1312-Q1 and LDC1314-Q1 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power. The products are easy to use, only requiring that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing solution cost and size.

The LDC1312-Q1 and LDC1314-Q1 offer well-matched channels, which allow for differential and ratiometric measurements. This enables designers to use one channel to compensate their sensing for environmental and aging conditions such as temperature, humidity, and mechanical drift. Given their ease of use, low power, and low system cost these products enable designers to greatly improve on existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications. Inductive sensing offers better performance, reliability, and flexibility than competitive sensing technologies at lower system cost and power.

The LDC1312-Q1 and LDC1314-Q1 are easily configured via an I2C interface. The two-channel LDC1312-Q1 is available in a WSON-12 package and the four-channel LDC1314-Q1 is available in a WQFN-16 package.

The LDC1312-Q1 and LDC1314-Q1 are 2- and 4-channel, 12-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1312-Q1 and LDC1314-Q1 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power. The products are easy to use, only requiring that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing solution cost and size.

The LDC1312-Q1 and LDC1314-Q1 offer well-matched channels, which allow for differential and ratiometric measurements. This enables designers to use one channel to compensate their sensing for environmental and aging conditions such as temperature, humidity, and mechanical drift. Given their ease of use, low power, and low system cost these products enable designers to greatly improve on existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications. Inductive sensing offers better performance, reliability, and flexibility than competitive sensing technologies at lower system cost and power.

The LDC1312-Q1 and LDC1314-Q1 are easily configured via an I2C interface. The two-channel LDC1312-Q1 is available in a WSON-12 package and the four-channel LDC1314-Q1 is available in a WQFN-16 package.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet LDC1312-Q1, LDC1314-Q1 Multi-Channel 12-Bit Inductance to Digital Converter (LDC) for Inductive Sensing datasheet PDF | HTML Apr 29, 2016
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) PDF | HTML Jun 22, 2021
Application note Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) PDF | HTML Jun 16, 2021
Application note LDC Device Selection Guide (Rev. D) PDF | HTML Jun 15, 2021
Application note Sensor Design for Inductive Sensing Applications Using LDC (Rev. C) PDF | HTML May 21, 2021
Application note LDC Target Design (Rev. B) PDF | HTML May 13, 2021
Functional safety information LDC1314-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec 12, 2019
Application note Configuring Inductive-to-Digital-Converters for Parallel Resistance (RP) Variati (Rev. B) Nov 11, 2019
Application note EMI Considerations for Inductive Sensing Feb 22, 2017
Application note LDC1312, LDC1314, LDC1612, LDC1614 Sensor Status Monitoring Oct 9, 2016
Application note Setting LDC1312/4, LDC1612/4, and LDC1101 Sensor Drive Configuration PDF | HTML Apr 5, 2016
Application note Inductive Sensing Touch-On-Metal Buttons Design Guide PDF | HTML Mar 30, 2016
Application note Power Reduction Techniques for the LDC131x/161x for Inductive Sensing PDF | HTML Mar 18, 2016
Application note Optimizing L Measurement Resolution for the LDC1312 and LDC1314 PDF | HTML Feb 12, 2016
Application note Measuring Rp of an L-C Sensor for Inductive Sensing Oct 1, 2015
User guide LDC Reference Coils User’s Guide May 14, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LDC1314EVM — LDC1314 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils

The LDC1314 evaluation module demonstrates inductive sensing technology for sensing and measuring the presence of a conductive target. The evaluation module includes two example PCB sensor coils that connect to the four channels of the LDC1314, and an MSP430 microcontroller is used to interface the (...)
User guide: PDF | HTML
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Evaluation board

LDCCOILEVM — Reference Coil Board Evaluation Module

The LDCCOILEVM is designed to provide maximum flexibility for system prototyping and allow for experimentation with different coil sizes. It includes 19 unique types of PCB coils that range from long rectangular asymmetric coils to small circular coils 3mm in diameter. Every coil is separated by (...)

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GUI for evaluation module (EVM)

SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0

Supported products & hardware
Simulation model

LDC1314 IBIS MODEL

SNIM005.ZIP (26 KB) - IBIS model
Supported products & hardware
Calculation tool

LDC-CALCULATOR-TOOLS — Inductive Sensing Design Calculator Tool

The inductive sensing calculator tools provide two Excel spreadsheets to assist in the design process for inductive-to-digital converter (LDC) devices. These tools provide coil design assistance as well as some device-specific configurations.

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
WQFN (RGH) 16 Ultra Librarian

Ordering & quality

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